I have a 1990 LS400 equipped with the air-ride system. It seems like everytime I turn around I am having to replace parts, and they are not cheap! Now it seems the drive assembly height control module has gone out. The part number is 48950-50010 and the dealer want $935 for it!! It is leaking air from the round dial looking peice with a black gasket under neath. It is close to the electrical peice. Does anyone know where I can locate one of these cheaper or perhaps used? Has anyone had any problems with this component before? Help!!!